To celebrate Alix's fifteenth birthday, her father gives her a family heirloom: a one-of-a-kind holographic pocket watch. Unfortunately, it gets broken during her race with Kim. Furious and blaming her classmates, Alix is transformed by Hawk Moth into Timebreaker, capable of absorbing others' energy to increase her speed and ultimately travel back in time.
- Darker and Edgier: Probably the first in the series, complete with the most deaths (even most of the kids from Collège Françoise Dupont), a few suggestive quotes and actions, and the idea of a threesome in a kids' show.
- Dub-Induced Plot Hole: The dub left out that Alix's family heirloom is passed on on the 15th birthday of the youngest child in the family, making it look as if the writers forgot that she has an older brother or as if their father didn't like him.
- Earn Your Happy Ending: Because Timebreaker was the one who caused Chloe to break the watch the second go-around, Lucky Charm fixes it.
- Funny Background Event: Marinette is distracted by her dad calling her and misses the akuma flying right by her towards Alix.
- Heroic Sacrifice: Cat Noir protects Ladybug from Timebreaker's Touch of Death, at the cost of his life. Thankfully, he gets better thanks to Time Travel.
- Idiot Ball: When handed Alix's precious pocket watch, no-one thinks to put it in their pocket.
- Magic A Is Magic A: Ladybug's World-Healing Wave only fixes casualties of the fight between her and akumatized villains; however, in the new timeline, the watch was destroyed due to Timebreaker's sudden appearance.
- My New Gift Is Lame: Alix's initial reaction to the family watch.
- Never My Fault: Predictably, Chloe claims she had nothing to do with the destruction of Alix's watch, despite being the one to drop it. Also, Timebreaker blames Ladybug for the second destruction of her watch, despite the fact that all Ladybug did was tell her to put the watch down while she was the one who startled her.
- Schizo Tech: Alix's watch makes a small holographic projection even though it's decades old. Even acknowledged.Alix's dad: Let's just say our ancestor was ahead of his time.
- Set Right What Once Went Wrong: Timebreaker plans to go back to save her watch.
- Taking the Bullet: Cat Noir saves Ladybug from having her energy stolen by shielding her with his body. Thankfully, time travel fixes that.
- Twin Threesome Fantasy: Cat Noir's reaction to having two Ladybugs show up."Two Ladybugs?? I'm in heaven!"
- Wounded Gazelle Gambit: Timebreaker manages to trick Rose into getting absorbed by asking her to help her get up.
- You Already Changed the Past: Averted, Timebreaker's arrival causes the destruction of the watch, in completely different circumstances than the first time it happened.